Now uml nbms do not change default memory settings "-J-Xms32m -J-Xmx128m" in
"netbeans.conf".
Defaults are not enough for uml module.
Previously settings were set to "-J-Xms256m -J-Xmx512m" by enterprise pack
installer.
With default settings performance problems are highly visible and 'OutOfMemory'
appears after sime time of active IDE usage.

This one should be closed as WONTFIX because a different mechanism for memory settings tuning is in place for 6.0. The
max heap size value is now computed dynamically by launcher to fit the user's RAM size (heap size from 96m to 512m
depending on how much RAM the user has).
I don't recommend to let any plugin installed via UC to toggle netbeans.conf.